<template>
  <div class="permission-container">
    <div class="app-container">
      <!-- 表格 -->
      <el-card>
        <div style="text-align: right; margin-bottom: 20px">
          <el-button
            type="primary"
            size="small"
            @click="hAdd(1, '0')"
          >添加权限</el-button>
        </div>
        <el-table :data="list" border row-key="id">
          <el-table-column prop="name" label="名称" />
          <el-table-column prop="code" label="标识" />
          <el-table-column prop="description" label="描述" />
          <el-table-column label="操作">
            <template slot-scope="scope">
              <!-- 按钮级别权限，只有type===1的时候，才可以添加 -->
              <el-button
                v-if="scope.row.type === 1"
                type="text"
                @click="hAdd(2, scope.row.id)"
              >添加</el-button>
              <el-button
                type="text"
                @click="hEdit(scope.row.id)"
              >编辑</el-button>
              <el-button
                v-if="scope.row.children.length === 0"
                type="text"
                @click="hDel(scope.row.id)"
              >删除</el-button>
            </template>
          </el-table-column>
        </el-table>
      </el-card>
    </div>
    <el-dialog
      :visible.sync="showDialog"
      :title="isEdit ? '编辑' : '新增'"
      @close="hClose"
    >
      <!-- 表单内容 -->
      <el-form
        ref="formDataRef"
        :model="formData"
        label-width="100px"
        :rules="rulesForm"
      >
        <el-form-item prop="name" label="权限名称">
          <el-input v-model="formData.name" />
        </el-form-item>
        <el-form-item prop="code" label="权限标识">
          <el-input v-model="formData.code" />
        </el-form-item>
        <el-form-item prop="description" label="权限描述">
          <el-input v-model="formData.description" />
        </el-form-item>
        <el-form-item label="权限启用">
          <el-switch
            v-model="formData.enVisible"
            active-text="开启"
            active-value="1"
            inactive-text="关闭"
            inactive-value="0"
          />
        </el-form-item>
      </el-form>

      <template #footer>
        <div style="text-align: right">
          <el-button @click="showDialog = false">取消</el-button>
          <el-button type="primary" @click="hSubmit">确定</el-button>
        </div>
      </template>
    </el-dialog>
  </div>
</template>

<script>
// 引入组件
import { getTree1 } from '@/utils/index'
import {
  getPermissionListAPI,
  addPermissionAPI,
  delPermissionAPI,
  getPermissionDetailAPI,
  updatePermissionAPI
} from '@/api/permission'
export default {
  data() {
    const validName = (rule, value, callback) => {
      // 同级部门pid相等
      let validNameList = this.validList
        .filter((ele) => ele.pid === this.curId)
        .map((ele) => ele.name)
      console.log(this.curId)
      if (this.isEdit) {
        validNameList = this.validList
          .filter(
            (ele) =>
              ele.pid === this.validForm.pid && ele.name !== this.validForm.name
          )
          .map((ele) => ele.name)
      }
      console.log(validNameList)
      if (validNameList.includes(value)) {
        callback(new Error('权限名称：' + value + '被占用'))
      } else {
        callback()
      }
    }
    const validCode = (rule, value, callback) => {
      let validCodeList = this.validList.map((ele) => ele.code)
      if (this.isEdit) {
        validCodeList = this.validList
          .filter((ele) => ele.code !== value)
          .map((item) => item.code)
      }
      if (validCodeList.includes(value)) {
        callback(new Error('权限标识' + value + '被占用'))
      } else {
        callback()
      }
    }
    return {
      list: [],
      showDialog: false, // 是否显示弹层
      formData: {
        name: '', // 名称
        code: '', // 权限标识
        description: '', // 描述
        enVisible: '0', // 开启
        pid: '', // 添加到哪个节点下
        type: '' // 类型
      },
      rulesForm: {
        name: [
          { required: true, message: '权限名称必填', trigger: 'blur' },
          { validator: validName, trigger: 'blur' }
        ], // 名称
        code: [
          { required: true, message: '权限标识必填', trigger: 'blur' },
          { validator: validCode, trigger: 'blur' }
        ], // 权限标识
        description: [
          { required: true, message: '权限描述必填', trigger: 'blur' }
        ] // 描述
      },
      isEdit: false,
      curId: '',
      validForm: {}, // 自定义校验表单
      validList: [] // 自定义校验数组
    }
  },
  created() {
    this.getPermissionList()
  },
  methods: {
    // 点击编辑按钮
    hEdit(id) {
      this.showDialog = true
      this.isEdit = true
      console.log(id)
      this.getPermissionDetail(id)
    },
    // 重置表单
    hClose() {
      this.$refs.formDataRef.resetFields()
    },
    // 表单提交按钮
    hSubmit() {
      this.$refs.formDataRef.validate((valid) => {
        if (!valid) return
        this.isEdit
          ? this.updatePermission(this.formData)
          : this.addPermission()
      })
      // 表单兜底校验TODO。。。
    },
    // 添加
    async addPermission() {
      try {
        await addPermissionAPI(this.formData)
        // 保存数据
        this.$message.success('添加成功')
        this.showDialog = false
        this.getPermissionList()
      } catch (err) {
        console.log('', err)
      }
    },
    // 添加按钮
    hAdd(type, pid) {
      this.curId = pid
      this.isEdit = false
      this.showDialog = true
      // 更新type和pid
      this.formData.type = type
      this.formData.pid = pid
    },
    // 获取权限列表
    async getPermissionList() {
      try {
        const res = await getPermissionListAPI()
        console.log('', res)
        // 保存数据
        this.list = getTree1(res.data)
        this.validList = res.data
      } catch (err) {
        console.log('', err)
      }
    },
    // 删除
    async delPermission(id) {
      try {
        await delPermissionAPI(id)
        // 保存数据
        this.$message.success('删除成功')
        this.getPermissionList()
      } catch (err) {
        console.log('', err)
      }
    },
    // 根据id获取详情
    async getPermissionDetail(id) {
      try {
        const res = await getPermissionDetailAPI(id)
        console.log('', res)
        // 保存数据
        this.formData = res.data
        this.validForm = { ...this.formData }
      } catch (err) {
        console.log('', err)
      }
    },
    // 根据id修改详情
    async updatePermission(data) {
      try {
        await updatePermissionAPI(data)
        // 保存数据
        this.showDialog = false
        this.$message.success('修改成功')
        this.getPermissionList()
      } catch (err) {
        console.log('', err)
      }
    },
    // 点击删除按钮
    hDel(id) {
      this.$confirm('确认删除？', '系统提示')
        .then(() => {
          this.delPermission(id)
        })
        .catch(() => {})
    }
  }
}
</script>
